* Version 4.01.17 works fine for me on NixOS, driving both a Samsung ML-2165w
and a Samsung ML-2510 printer successfully.
* Version 4.00.39 is broken. The build shows errors, but doesn't abort. The
generated binaries don't work, because they are lacking rpaths to their
library dependencies.
* Renamed old default.nix file to 1.00.37.nix. That version wasn't the default
and it feels like a bad idea to mix versioned and unversioned file names in
the same directory.